594 The American Naturalist. [July, 
a few occasions noticed what appeared to be large individuals of Poly- 
xenus of a dark brownish color, running about on the smooth leaves of 
the shrubby undergrowth, several feet from the ground. To preserve 
and carry to America specimens in satisfactory condition is not easy, 
and hence the present purpose of describing the external features of 
one found yesterday and having nearly all the bristles still in place. 
SAROXENUS g. n. 
Body minute, tapering caudad. 
Head rounded, not as broad as the first segment ; between the eyes 
with an anterior crescentic tiara of long upright serrate bristles: on 
each side between and above the eyes a short curved line of similar 
hairs elsewhere the head is smooth. 
Eyes of a few (six ?) small ocelli clustered on lateral prominences of 
the head. 
Antenne long and slender, distinctly clavate; sixth joint longest 
and much the thickest ; seventh slightly longer than any of the proxi- 
mal ; eighth joint distinct, minute, several times smaller than the sev- 
enth. 
First segment with six tufts of bristles, two in front, two behind and 
one on each side ; the dorsal tufts are broader transversely ; the lateral 
are raised on large projections, as in Polyxenus, and include more nu- 
merous and longer bristles. 
The following six segments have each four tufts of similar bristles, 
two lateral and two posterior, the latter broad, as on the first segment ; 
the bristles are longer and the tufts larger on posterior segments. . 
Last segment with a nearly complete transverse row of divergent 
bristles just in front of the dense brush of much finer, closely com- 
pacted bristles which compose the terminal fascicle. 
Saroxenus scandens sp. n. 
General color dark grayish brown, the terminal fascicle nearly 
white; in alcohol and under the microscope, the bristles of the head 
and segments are seen to be dark brown; the distal joints of the an- 
tennz and legs are pinkish brown, and the exposed portions of the in- 
tegument have a tinge of the same color; integument generally waxy 
or dirty white, and transparent so that the contents of the alimentary 
canal are visible as a dark line ; eye spots dark brown. 
Segments 8, though the specimen may not be mature; ten pairs of | 
] 
Length 3.5 mm., or with the terminal fascicle 4 mm.; width 1.2 | 
mm., including the bristles. 4 
